Transmission shift problems and noi

There are several tech bulletins on your transmission, but most refer to certain codes being set, is the service engine soon light on? If yes go to Autozone, they read the codes free, post all found here. Freeze frame data too if you can.

https://www.2carpros.com/articles/automatic-transmission-problems

This guide can help us fix it

Does it feel like the transmission is shifting through the gears or is it staying on one gear? Is the transmission fluid clean and full? Has the check engine light come on?

No check engine light?

Without the check engine light, it becomes a guessing game. I hate to say it, but it is nearly impossible for me to diagnose this type of problem without being there. Is there anyone you trust that could just listen to what it is doing?

When you shifting it is the selector on the transmission turning?

It will need to be checked at a transmission shop.

I don't see how the fuel pump has anything to do with the transmission. Have you checked for codes in the computer yet?Also checked the transmission fluid level and condition of it yet?

Those symptoms could be related to overfilling the transmission, but the first question is why did you have to add transmission fluid in the first place? If there's a leak, low fluid level will allow the pump to draw up air instead of fluid. If the level is excessively high, rotating members will whip up the fluid and introduce air into it. Since air compresses, the aerated fluid won't be able to put pressure on the clutch packs to apply them. That air in itself will not hurt anything. It's the clutch pack slippage from continuing to try to drive it that way that will do the damage.

Address the fluid level issue, then allow it to sit a little while for the air bubbles to work their way out of the fluid.

Also be sure you're following proper procedures when checking the fluid level. The engine must be warmed up and idling in neutral or park after briefly running the shift lever through all the ranges. If you try to check the level with the engine off, the fluid level will appear to be too high.

If the shift lever is hard to move, but it does go to all the gears, suspect the cable is fraying at one end and is becoming stuck in the casing. You can verify that by disconnecting it under the hood on the transmission. Now, if the lever still moves with too much difficulty, replace the cable. If it moves very freely, work the lever on the transmission to see if there is a problem there. Something binding inside the transmission would be much less common.

Usually the not shifting out of first gear when passing is actually caused by a clogged fuel filter. Yes a clogged fuel filter. The check engine light will probably be code 44 which is lean exhaust caused by the fuel filter. Hope this helps